<template>
    <div>
      <el-dialog :before-close="beforeClose" :close-on-click-modal="false"
                 :visible="visible"
                 @update:visible="$emit('update:visible',$event)"
                 title="新增楼栋" width="830px"
      >
        <el-form :model="form" inline ref="form">
          <div class="dialog-container">
            <section :key="building.uid" v-for="(building, index) in form.buildings">
              <el-form-item :prop="'buildings.' + index + '.building_num'"
                            :rules="[{ required: true, message: '请输入楼栋号'},{validator:checkUniqueNum}]"
                            label="楼栋号"
                            label-width="90px">
                <el-input placeholder="例：8" size="medium" style="width: 150px;" class="text-center" v-model="building.building_num">
                  <template #append>号楼</template>
                </el-input>
              </el-form-item>
              <el-form-item :prop="'buildings.' + index + '.floor'" label="楼层数">
                <el-input-number :min="1"
                                 controls-position="right"
                                 size="medium"
                                 style="width: 100px;"
                                 v-model.number="building.floor"/>
              </el-form-item>
              <el-form-item :prop="'buildings.' + index + '.desc'" label="描述">
                <el-input placeholder="选填" size="medium" style="width: 230px;" v-model="building.desc"/>
              </el-form-item>
              <el-form-item>
                <el-button :disabled="form.buildings.length === 1"
                           @click="delBuilding(index)"
                           circle
                           icon="el-icon-minus"
                           plain
                           size="mini"
                           type="danger"/>
                <el-button @click="addBuilding(index)"
                           circle
                           icon="el-icon-plus"
                           plain
                           size="mini"
                           type="primary"
                />
              </el-form-item>
            </section>
          </div>
        </el-form>
        <template #footer>
          <section class="flex-center">
            <el-button @click="submit" type="primary">确认添加</el-button>
            <el-button @click="closeDialog">取消</el-button>
          </section>
        </template>
      </el-dialog>
  
      <el-dialog title="错误信息" :close-on-click-modal="false"  v-model="isShowErrDialog" width="600px">
        <div class="dialog-container">
          <el-table :data="errList" border stripe>
            <el-table-column align="center" label="楼栋号" prop="building_num" />
            <el-table-column align="center" label="错误原因" prop="errors" class-name="color-danger" />
          </el-table>
        </div>
      </el-dialog>
    </div>
  </template>
  
  <script>
    class BuildingItem {
      constructor() {
        this.building_num = "";
        this.floor = 6;
        this.desc = "";
        this.uid = Math.random() * Date.now();
      }
    }
  
    export default {
      name: "add-buidling",
      props: {
        visible: Boolean
      },
      data() {
        return {
          form: {
            buildings: [new BuildingItem()]
          },
          isShowErrDialog:false,
          errList:[]
        }
      },
      methods: {
        beforeClose(done) {
          this.form.buildings = [new BuildingItem()];
          done && done();
        },
        addBuilding(index) {
          this.form.buildings.splice(index + 1, 0, new BuildingItem())
        },
        delBuilding(index) {
          this.form.buildings.splice(index, 1)
        },
        closeDialog() {
          this.$emit('update:visible', false);
          this.beforeClose();
        },
        checkUniqueNum(rule, value, callback) {
          const curIndex = rule.field.split('.')[1] * 1;
          const findRes = this.form.buildings.findIndex((item, index) => {
            return item.building_num && item.building_num === value && curIndex !== index
          });
          if (findRes !== -1) {
            callback('楼栋号重复');
          } else {
            callback();
          }
        },
        async submit() {
          try {
            await this.$refs.form.validate();
            this.request.post('/api/building/insertMany', this.form).then(res => {
              if (!res.data.errcode) {
                this.$alert('添加成功！', '提示', {type: "success"});
                this.closeDialog();
                this.$emit('update');
              } else {
                this.$message.error('添加失败，请查看！');
                this.isShowErrDialog = true;
                this.errList = res.data.errorBuildings.map(item=>{
                  return {
                    errors:item.errors.map(item=>item.msg).join(';'),
                    ...item.builidng
                  }
                })
              }
            })
          } catch (e) {
            return false
          }
  
        }
      }
    }
  </script>